Friction-driving device



H. C. EGERTON.

FRICTION DRlVlNG DEVICE.

APPLICATION F1LED ocr. 15, 1918.

Patented July M, w22,

Blum imm@ Y I rv unxnnv. ESSE! .hlniv s A., .N f

.HENRY cfnenamonor arnenwoon, nnwirr'nasny.

raIciIoN-'nmvme-nnvica aaa-255e.

Application led 0ct0ber15p1918. Serial No. 258,276.;

To all whom it may concern: p p Be it known that I, HENRY EGnR'roN, a citizen of the United States, and resident of IRidgewood, county of Bergen and State'of New Jersey, have made a certain new and useful Invention Relating to Friction- Driving Devices, of which the following'is a specification, taken in connectionwith the accompanying drawing.

This invention relates especially to friction driving devices which maybe of the variable speed type and in which one or more of the. different driving" elements which may be of any suitable construction may be formed with replaceable facing members having vulcanized rubber faces, if desired. These facing elements are preferably formed with stiifened body portions or members having fabric or other fibrousmaterial carrying and preferablyf' thoroughly impregnated with cured phenolic condensation cementing material and, if desired, projecting aligning portions of similar composition may be formed on the -sti'ened body to facilitate connection with the element on which the facing member is mounted. ln some cases the driving face may be composed of such cured impregnated fibrousl material in 'which any desi-red friction or wearing elements are incorporatedand during the molding and curing this material may of course be given an accurately shaped smooth surface. A vulcanized rubber facing member may, if desired, be securely and permanently connected to such a stiffened body in various ways, as by anv interposed connector member of fabric having a frictioned or other rubberized coating engaging the vulcanized rubber facing and securely united thereto and cemented to the stiffened body when these parts are vulcanized and cured under pressure at the desired heat. Nuts, plates or other securing devices may be incorporated in the stiffened body or other parts of the facing member which may be in disk, ring or conical form to suit the cooperating element of the driving device. The accompanying drawing shows in a somewhat diagrammatic way an illustrative embodiment of this invention in section, parts being shown in elevation.

vThe friction driving device may as indicated, have a driving disk 11 mounted on the shaft l2 and formed with'suitable aligning openings 20`in the disk, to facilitate the Specification ot Letters Patent.

' mold additional i fsiredrton the facing member,

f' composition may be forced against the stiff- 'enedbody fabric and united thereto under pressure by heating l'the mold vand elements .the rubber and cures or solidifies the phe- .nolicfcondensation cementing material and 'Patenten Jawat', ieee.

alignment and vsecuring of the replaceable facing member thereon. This facing member may advantageously comprise a stiffene lbody portion formed of oneor more layers of fabric such as heavy canvas or other woven or knit'fa'bric, open textured' paper or other `fibrous material carrying and preferably quite thoroughly impregnated, wlthcured phenolic condensation cementing! materlal such as bakelite, condensite or redl manol varnish compositions. Heavy canvas may for instance, be impregnated with bakeli'te varnish No. l and then dried and several layers cemented together under moderate heat, and such special portions or projections as the projecting aligning portions 4f formed by inserting'in a suitably shaped layersror cut portions of fabric or fibrous material containing such cementing compositions. Some thirty to sixty per cent of such cured phenollc condensation cementingA material maybe present in the completed stiened body, which vmay thus be given a strength of between ten thousand and twenty thousandpounds per square inch. Such a faccanvas or other ing member may be accurately molded and may. advantageously be used in some cases as a'replaceable `member in connection with a rub'ber faced or othercooperating member of the friction driving device.

Where avulcanized rubber face is dehowever, the disk. lof any suitable vulcanizable rubber therein to temperatures of 250 to 320 F. for an hour more or less. .This vulcanizes unites'all the parts, the rubber being forced sufficiently into the pores or interstices of the fabric so as to be securely united thereto. lf desired,'however, a fabric connector layer 2 of light canvas or `other fabric having a frictioned or other rubberized coating .2l thereon may be interposed between the rubber disk facing and the stifened body before the heat curing thereof so that the l rubberized side of this connector engages the rubber facing and promotes the vulcanizing union thereof to the stiifened body," the cementing material of which engages and cements the Connector layer thereto. Ef desired, tlireadedgoii othernuts or securing de-i *i vices such as 5 7 may be incorpgirgtgdtin the facing' member,"'preferablyfwithin 'or in contact with'the stiffened bqdyfthereof and '15 held i'nfplace by locating--piiis'iiiifth mold' fso as to 'be securely molded ".in ,'t` l 1e desired lposition Within the facing `meii'iber and adapted to be engaged by secuijiiigboltssuch has 7 -Which may pass through holes in the '10 .driving disk? 1v1.v

The driving wheel' 16 which may; be slid- .ably mounted on the shaft 13 and having the key 15 in the Wheel, engagingthe keyvvay 14: in the shaft'may with advantage have a re- 15 placeablel facing member mounted between the flange 17 of theyyheel'and theremovable be softened by moderate flieat and. then Y; Wound a number oftiines around' al mandrel or molding lelement ofthe desired size and a fabric connector member 1'0"h'aving a rubbeifizedouter siirface inayf--`bewound o'n. A facing 9'. of vu1canizable rubber or other suitable compqsition having any desired friction promotin elementsftherin may bev applied andthe w ole vulcanized, cured and :iuiiited in a mold underheat and pressure as' .previously described 55 This invention hasbeen described inconnection with anumberjof illustrativefem! bodiments, forms, proportions, elements, parts, shapes, materials, compQsitions,-an'd methods of preparatiomproduction an'duse, l0 to the details of which' disclosure the invention is not of course to bel limited, since What is claimed as new an'd' Wliat;is"desire`d to be secured by Letters Pateiits'set'forth in "the" appended claims.

L5 *I claim:

therefor com rising a 'sti`ffened body having a plurality o layers of canyascarrying and impregnated' Witlf'curedlplfenoli:condensaA tion cemeting material;a-vulcaiiized rubalfabric connector iiiterposedf'betvveen said body vand facing and securely unitedthereto, projecting aligning portions on said body containing fibrous materiall aii`d"carry ing phenolic condensationceifienting material cemented to said body, andthrea'ded securing devices embedded in said facing niember and cooperating with'said'stiffened o y.

2. In friction drivin devices, a drive member and a replacea le facing member therefor comprising a stiffened body having a plurality of layers of canvas carrying yaligning portions on said body containing f 3911i". friction driving idevices, a drive member andy a replaceable facing member member anda replaceable lfacing member 1. In friction driving devicesha drive" thereforflfcomprising:a stiifeiiedv body conmember arid a` replaceable"facing member ifizasso cured phenolic condensation cemeiitingv material, a' vulcanized rubber vfacing secured to said stiffened body, projecting fibrous material and carrying phenolic condensation cementing material ,cemented to said body, andv securing devices embedded in said facing member and cooperating with said ystiHened body'.

therefor comprising a stiifened body having 'canvas carrying cured phenolic condensationA cementingmateiial, a vulcanized rubber facing secured to 'said Stiifened body, and 80 vvsecuring defices embedded in4 said facing member and cooperating With said stiifened body,

4. -In friction driving devices, a drive member and a replaceable facing member therefor comprising a stiffened body having faplurality of layers of fabric carrying cured fphenolic, condensation cei'nenting material,

-. projecting aligning' portions on said body ,containingiiibrouslmaterial and carrying phenolic condensation cementing material y`cemented Ito said body, and'threade'd securingfdevicesembedded in said facing member @and cooperating with said Astifened body.

5.1In friction ifdriving devices, a drive member and a replaceable facing member thereforcomprising.a stifl'ened body havin fabric carryingcured phenlic condensation cementing material, and threaded securing devices embedded'iii said facing member and 100 lcooperating with said'stiifened body..

6. In" friction .v -drivin devices, a drive. .member and a vreplacea le facing..I member1 .tliereforcomprisiiig'a stiffened body having fabric carrying cured phenolic condensation cementing-material, and a facing secured L to said body and of diiferentcompos'i'tion therefrom.

7 2 `Inf-"friction dlriving devices, ,la drive ingfsecured to said'vsti'ii'ened body and metal- 115 -1-i`cseeuring'devies'jembedded in said facing ber facing Vsecured to sadfstiffened body and body.

memberiand'icooperat-ing with said stiffened able facing member comprising a stiifenedy body having a plurality of layers of fibrous material carrying cured phenolic condensation cementing material and a rubber com- 130,

position facing secured to said stiifened body.

10. In friction driving devices, a facing member comprising a stiifened body hav ing fibrous material carrying cured phenolic condensa-tion cementing material and a diverse composition facing secured to said stifened body.

11. In friction driving devices, a replaceable facing member comprising a stiifened body having fibrous material carrying cured phenolic condensation cementing .material and threaded metallic securing devicesembedded in said facing member and cooperating with said stiened body.

12. In friction driving devices, a facing member comprising a stiffened body'having fibrous material carrying cured phenolic condensation cementing material and metallic securing devices embedded in said facing member and cooperating with said stiffened body.

13. In friction driving devices "a replaceable facing member lcomprising a shaped stiffened body- -formed with projecting aligning portions and having fibrous material carrying cured phenolic condensation cementing material.

14. In friction driving devices, a replaceable facing member comprisinga shaped stifened body having fibrous material carrying cured phenolic condensation cementing material.

- HENRY- C. 'EGERTON 

